The trailer for the 21-year-old actress' new flick "On the Road" has been released, which shows Robert Pattinson's real-life love revealing more than ever before. In one scene, Stewart goes topless while driving with fellow shirtless costars Garrett Hedlund, 27, and Sam Riley, 32.

Based on the novel by Jack Kerouac and directed by Walter Salles, "On the Road" also stars Kirsten Dunst, Amy Adams, Viggo Mortensen, Elisabeth Moss, Terrence Howard and Steve Buscemi. It will premiere at the Cannes Film Festival later this year.